With cases of COVID-19 rising locally and increased circulation of the highly transmissible Delta variant, the Counties of Alameda, Contra Costa, Marin, San Francisco, San Mateo, Santa Clara, Sonoma, and the City of Berkeley recommend that everyone, regardless of vaccination status, wear masks indoors in public places to ensure easy verification that all unvaccinated people are masked in those settings and as an extra precautionary measure for all.
In June, the Delta variants comprised 43 percent of all specimens sequenced in California. The Centers for Disease Control and Prevention (CDC) noted that Delta variants are now responsible for 58 percent of new infections across the country.
Fully vaccinated people are well protected from infections and serious illness due to known COVID-19 variants including Delta variants, and vaccinating as many people as possible, as soon as possible, continues to be our best defense against severe COVID-19 infection, and the harm it can do to our region. Vaccines are safe, effective, free, and widely available to everyone 12 and older.